Gil Torrez, a former FBI agent that has has spent time in different U.S. embassies saying there are many ways that security is taken into consideration.

(Torrez) "We have many many embassies around the world so each one has a different threat level assessments are made, so you know the State Department is heavily involved in this."

After the attacks in the 1980's in Beirut, Lebanon against U.S. Marines and the U.S. embassy. The embassy is now outside the city ringed with fences and multi-layers of protection. So too is the U.S. embassy in Sanaa, Yemen. The U.S. embassy in Baghdad, Iraq is the largest and most expensive at a cost of over $500 million dollars.